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Understanding the difference between slightly superheated steam and saturated steam


In our industrial production, steam is a very commonly used "energy helper", but when it is subdivided into slightly superheated steam and saturated steam, there are huge differences .

1. The "state" of steam is the core difference between the two.

Saturated steam is steam in which gaseous and liquid water coexist, with a steam quality exceeding 95%. Slightly superheated steam is obtained by reheating saturated steam. For example, further heating 180°C saturated steam to 230°C increases the steam's enthalpy. At this point, there is no liquid water in the steam, achieving a true 100% steam quality. Furthermore, the temperature is slightly higher than saturated steam at the same pressure, achieving "low pressure, high temperature."

2. The impact on the equipment during transportation is different

As mentioned earlier, because saturated steam contains liquid water, water droplets can impact pipes and valves like small pebbles as it flows through pipes, causing wear and tear, necessitating regular opening of steam traps for drainage. Slightly superheated steam, being a pure gas without liquid droplets, does not impact pipes during transportation, nor does it retain water in steam traps, preventing impact and wear on internal equipment, thereby extending its lifespan.Recently, a composite-chamber, slightly superheated steam generator has emerged on the steam energy market, enabling steam humidity control. It can generate both saturated and slightly superheated steam. When producing superheated steam, it can achieve a superheat of 20°C-30°C, with a maximum temperature of 230°C. This not only meets low-pressure and high-temperature requirements, but also significantly improves operating efficiency and caters to a wider range of operating conditions.The emergence of the composite-chamber micro-superheated steam generator breaks the limitation of " one device can only produce a single type of steam" and provides a new solution for the steam energy supply industry. For enterprises, this is a practical option for reducing fuel costs , minimizing equipment wear and tear, and improving production efficiency. As the technology continues to mature and its application scenarios deepen, we believe it will play a more precise and efficient role in the steam energy supply industry, helping enterprises achieve more optimal energy allocation based on their actual needs.

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